39940460 has 24 divisors (see below), whose sum is σ = 95857440. Its totient is φ = 13693824.

The previous prime is 39940409. The next prime is 39940469. The reversal of 39940460 is 6404993.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 39940460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39940469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142505 + ... + 142784.

It is an arithmetic number, because the mean of its divisors is an integer number (3994060).

Almost surely, 2^39940460 is an apocalyptic number.

It is an amenable number.

39940460 is an abundant number, since it is smaller than the sum of its proper divisors (55916980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39940460 is a wasteful number, since it uses less digits than its factorization.

39940460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285305 (or 285303 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 39940460 is about 6319.8465171237. The cubic root of 39940460 is about 341.8254184597.

The spelling of 39940460 in words is "thirty-nine million, nine hundred forty thousand, four hundred sixty".